• Photo of Helianthus atrorubens (Helianthus atrorubenss)

Plant Profile: Helianthus atrorubens

Taxonomy: Helianthus atrorubens

Names

Appalachian Sunflower, Hairy Wood Sunflower, Purpledisc Sunflower, Sunflower

  • Photo of Helianthus atrorubens (Helianthus atrorubenss)

Phonetic Spelling:hee-lee-AN-thus a-tro-ROO-bens

Genus:Helianthus

Species:atrorubens

Family:Asteraceae

The sunflower is a robust perennial herb that typically reaches heights of 3 to 5 feet. Its leaves are arranged oppositely and feature smooth edges, with fine white hairs lining the margins. The stem is covered in coarse hairs. The plant produces large, vibrant yellow flowers with a dark center, which bloom from mid-summer and persist into late fall.

Helianthus atrorubens thrives in rocky, clay, or sandy soils found in woodlands and along the edges of roads. It is particularly well-suited for open woodland gardens, cottage gardens, and mixed perennial beds, where it draws in bees and butterflies. Additionally, woodland birds gather its seeds.

Fire Risk: This species has a moderate flammability rating.

For further details on Helianthus, please refer to additional resources.

Helianthus atrorubens Feature Summary

Helianthus atrorubens Image Gallery

Tags

#deciduous
#perennial
#wildlife plant
#cottage garden
#food source
#fire
#medium flammability
#NC native
#deer resistant
#native garden
#pollinator plant
#native wildflower
#larval host plant
#food source fall
#food source herbage
#food source nectar
#food source pollen
#bird friendly
#food source hard mast fruit
#butterfly friendly
#nectar plant late summer
#nectar plant early fall
#nectar plant mid-fall
#pollinator garden
#audubon
#woodlands
#silvery checkerspot butterfly

Similar Plants

Helianthus atrorubens Feature Summary

Attributes
It is found in the coastal states of Midatlantic to Southeastern US, the Gulf Coast, plus the inland states of Kentucky, Tennessee, and Illinois.
Flowers provide nectar to pollinators from July until the first frost. This is a larval host plant that supports Silvery Checkerspot (Chlosyne nycteis). The Silvery Checkerspot has at least 1-2 broods in the north from June-July in the deep south and Texas, they have as many as 3-4 broods from May through September. Its seeds are favored by songbirds, ruffed grouse, quail, morning doves, and small mammals.
Perennial
medium flammability
Fruit
Displays from September to November
Brown/Copper
< 1 inch
Flowers
The 2 inch wide daisy-like flowers have 10-15 yellow rays surrounding a dark purple-brown disk. There are several flowers on individual 3" pedicels. Blooms from July to October
Purple/Lavender
Gold/Yellow
Brown/Copper
7 - 20 petals/rays
Leaves
Leaves are hairy and rough on top, pubescent on the bottom. The leaf size gets noticeably smaller as the leaves reach inflorescence. Leaf pairs appear in a whorled pattern around the stem. Petioles often have a winged appearance.
Ovate
Lanceolate
Serrate
Crenate
Stem
The lower stem is quite hairy, it becomes pubescent to glabrous (smooth) as the leaf pairs reduce in size toward the upper part of the stem.
Whole Plant Traits
Perennial
Native Plant
Wildflower
Herb
Coarse
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Good Drainage
Moist
Occasionally Dry
Coastal
Mountains
Piedmont
Clay
Sand
Shallow Rocky
Landscape
Butterfly Garden
Pollinator Garden
Native Garden
Woodland
Meadow
Naturalized Area
Butterflies
Pollinators
Songbirds

Helianthus atrorubens Attributes

Helianthus atrorubens: Country Or Region Of Origin

Southeastern US

Helianthus atrorubens: Distribution

It is found in the coastal states of Midatlantic to Southeastern US, the Gulf Coast, plus the inland states of Kentucky, Tennessee, and Illinois.

Helianthus atrorubens: Wildlife Value

Flowers provide nectar to pollinators from July until the first frost. This is a larval host plant that supports Silvery Checkerspot (Chlosyne nycteis). The Silvery Checkerspot has at least 1-2 broods in the north from June-July in the deep south and Texas, they have as many as 3-4 broods from May through September. Its seeds are favored by songbirds, ruffed grouse, quail, morning doves, and small mammals.

Helianthus atrorubens: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Helianthus atrorubens: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Helianthus atrorubens: Fire Risk Rating

extreme flammability
high flammability
low flammability
medium flammability

Helianthus atrorubens Fruit

Helianthus atrorubens: Fruit Description

Displays from September to November

Helianthus atrorubens: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Helianthus atrorubens: Fruit Color

grass
Brown/Copper

Helianthus atrorubens: Display/Harvest Time

Fall
Spring
Summer
Winter

Helianthus atrorubens: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Helianthus atrorubens: Fruit Width

< 1 inch
1-3 inches
> 3 inches

Helianthus atrorubens Flowers

Helianthus atrorubens: Flower Description

The 2 inch wide daisy-like flowers have 10-15 yellow rays surrounding a dark purple-brown disk. There are several flowers on individual 3" pedicels. Blooms from July to October

Helianthus atrorubens: Flower Color

filter_vintage
Brown/Copper
filter_vintage
Gold/Yellow
filter_vintage
Purple/Lavender

Helianthus atrorubens: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Helianthus atrorubens: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Helianthus atrorubens: Flower Bloom Time

Winter
Spring
Summer
Fall

Helianthus atrorubens: Flower Petals

2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals

Helianthus atrorubens: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Helianthus atrorubens Leaves

Helianthus atrorubens: Leaf Description

Leaves are hairy and rough on top, pubescent on the bottom. The leaf size gets noticeably smaller as the leaves reach inflorescence. Leaf pairs appear in a whorled pattern around the stem. Petioles often have a winged appearance.

Helianthus atrorubens: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Helianthus atrorubens: Leaf Color

spa
Green

Helianthus atrorubens: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Helianthus atrorubens: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Helianthus atrorubens: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Helianthus atrorubens: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Helianthus atrorubens: Hairs Present

No
Yes

Helianthus atrorubens: Leaf Feel

Fleshy
Glossy
Leathery
Papery
Prickly
Rough
Rubbery
Slippery
Smooth
Soft
Velvety
Waxy

Helianthus atrorubens Stem

Helianthus atrorubens: Stem Description

The lower stem is quite hairy, it becomes pubescent to glabrous (smooth) as the leaf pairs reduce in size toward the upper part of the stem.

Helianthus atrorubens: Stem Is Aromatic

No
Yes

Helianthus atrorubens Whole Plant Traits

Helianthus atrorubens: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Helianthus atrorubens: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Helianthus atrorubens: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Helianthus atrorubens: Growth Rate

Slow
Medium
Rapid

Helianthus atrorubens: Maintenance

Low
Medium
High

Helianthus atrorubens: Texture

Fine
Medium
Coarse

Helianthus atrorubens Cultural Conditions

Helianthus atrorubens: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Helianthus atrorubens: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Helianthus atrorubens: NC Region

Coastal
Mountains
Piedmont

Helianthus atrorubens: USDA Plant Hardiness Zone

thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Helianthus atrorubens: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Helianthus atrorubens Landscape

Helianthus atrorubens: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Helianthus atrorubens: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Helianthus atrorubens: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Helianthus atrorubens: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees